Pump valve



bl iil '13 1926. 1,580,402

J. J. BRETT PUMP VALVE Filed Nov. 15, 1923 INVENTOR.

a s Jana:

A TTORNEYS troleum from oil wells.

raerate a 13,1926.

un reo STA TE Sf PATENT OFF tor..-

JAMES J. BRETT, or HUNTINGTON BEACH, oa' IronNm, Assreuon OEONE-HALF o: GEORGE s. FOSNAUGI-I, or nunrnveron BEACH, CALI ORNIA...

PUMP. VAIIVEQ Application filed November 15, 1923. Serial- 1T0: 674,840.

To all whom it may concern: 7 p

Be it known that I, JAMES J. BRETT, a

citizen of the United States, and resident of Huntington Beach, in the county of Orange and State of California, have invented new and useful Improvements in a Pump Valve, of which the following is a specification.

This invention relates to a valve structure especially adapted for use inpumping pe fact that the capacity of reciprocating pumps of the character described is often decreased when the well makes gas in appreciable quantities. This is due to the gas generated or released from the strata passing the valves and at times holding the lat-- ter off their seats While making the working strokes, thereby permitting petroleum to flow back below the plunger or below the standing valve and making the stroke ineffective. The primary object ofthis invention is to provide a valve whose seating will be uneffected by the flow of gas. Another object of this invention is to provide a valve structure having means to initially shut off the flow of gas at the time the valve should close.

These objects together with other objects and corresponding accomplishments "are ob-v tained by means of the embodiments of my invention illustrated in the accompanying drawing, in which:

Fig. 1 is an axial ing valve constructed in accordance with my invention, position; Fig. 2 is an elevation of the valve with the gas element in open position; and.

Fig. 3 is a section asseen on the line 33 of Fig. 2.

Referring more particularly to the drawbushing is indicated bye.

ing, a plunger Mounted thereon is a valve cage which comprises a. sleeve portion 5. Extending above the sleeve portion is the crown 6 having at the top thereof a stem sucker rod. The sleeve has a cylindrical bore which is enlarged in diameter at the lower portion as indicated by 7; At the lower portion of the crown beneath the stem is a stud 8 to receive and hold a compression spring in place. The lower end of the bore is threaded to engage threads on the top of the plunger bushing so that it may be attached thereto.

It is a well known section through a work the valve being shown in closed for connection to the A- ball seat 9 slidingly fits within the bore 7 and has anupper portion reduced in diameter and a cup valve 10 having a body to slidingly'fit within the bore of the cage. A shoulder is formed upon the lower portion of the cup valve by enlarging the same as indicated by '11. By reason of this construction the cup.

valve and ball seat may be reciprocated within the enlarged part 7v of the bore of the cage. -'The cup valve is provided at its up-. per portion with ports 12 so placed that when the cup valve is in its upper position, the ports clear the sleeve 5 of the cage establishing' communication between the inside of the cup valve and theoutside. At the center of theicup valve. isa stud 13 in line with stud 8 to receive the lower end of compression spring is a ball 15.

14:. Housed within the cup valve The ball 15 isdisposedto rest upon seat 9.

The valve operates in the following manner: Pressure of the petroleum or liquid upon the lower portion ofthe valve, which occurs upon the down stroke causes the cup valve to rise against the action of spring 14: until the ports 12 clear the top of the threaded to receive sleeve establishing communication between.

the interior and exterior of thecup valve. Thereupon, ball 15 is lifted from its seat 9 by the pressure of fluidpassing through the port opening in the seat and then through ports 12 above the plunger. Upon the down stroke of the piston cup valve 10 moves downwardly closingports 12 and preventing the flow of fluid, either liquid or gaseous. Ball 15 also seats. In the operation ofthe ordinary valve structure, gas flows through the ball seat opening and by its velocity may. maintain the valve in a position off its seat so that on the up stroke the valve is opened preventing the pumping of liquid. In the present instance the cup valve shuts off the flow of gas, the configuration of the parts being such that the flow of gas exerts no pressure upon the valve cup tending to hold the latter open.

What I claim is:

In a valved pump piston, the combination'of a plunger bushing, a valve seat detachably mounted on its upper end and provided with. an external thread, a body having a crown for attachment to sucker rods with a sleeve portion at its lower end, said body havingv a bore of enlarged diameter at the lower end, a cylindrical valve cup slidabl'ymounte'd in said bore and having an enlargement slidably fitted in the bore of enlarged diameter, said cup being closed at the top and having ports in the sides thereof disposed to heopened "when said cap is in its upper position With said ports above said sleeve, portion and closed When said oii'p is in its lower position, said cu p being internally threaded at the lower end, a check valve seat 'moimted in the threaded end of 10 said valve, and a ball check valve housed Within said cup to open in the same directio i as saiden-p valve andmou-nted on said seat.

In Witness that I claim the foregoing I 15 have hereunto subscribed my name this 8th day of November, 1923.

JAMES J. BRETT. 

